Stove or furnace



(No Model.) 6 Sheets-Sheet 1. F. A. MAGEE.

STOVE OR PURNAGE.

No. 390,684. Patented Oct. 9, 1 88.

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STOVE OR FURNACE.

No. 390,684. Patented Oct. 9, 1 88.

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F. A. MAGEB.

STOVE 0R FURNACE. No. 390,684. Patented 001;. 9,1 88.

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STOVE 0R FURNACE. No. 390,684. Patented 001;. 9, 1888.

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P. A. MAGEE.

STOVE 0R FURNACE. No. 890,684. Patented Oct. 9, 1888.

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F. A. MAGEE.

STOVE 0R FURNACE.

No. 390,684. Patented Oct. 9, 1888.

Unirnn STATES PATENT FRANK A. MAGEE, OF CHELSEA, ASSIGNOR TO THE MAGEEFURNACE GOM- PANY, OF BOSTON, MASSACHUSETTS.

STOVE OR FURNACE...

SPECIFICATION forming part of Letters Fatent No. 390,684, dated October9, 1888.

Applicati n filed April 19, 1887. Serial No.235,4l4. (No model.)

To all whom, it may concern.-

Be it known that I, FRANK A. MAGEE, of Chelsea, in the county of Suffolkand State of Massachusetts, a citizen of the United States,

have invented a new and useful Improvement in Stoves or Furnaces, ofwhich the following is a full, clear, and exact description, referencebeing had to the accompanying drawings, forming a part of thisspecification, in

lo explaining its nature.

The invention has relation to those airheaters for domestic use whichare provided with an exterior casing for containing the heated air.

:5 The invention consists in a stove or furnace which has an aircasingwhich is provided with a front depression or recess which is open at itsfront, and which in its rear portion is provided with a seriesofperforations, through which access is had to the furnace within; in afuel-chamber which is provided with afront projection or protuberancewhich has a series of horizontal passages; in the combination of therecessed and perforated air-casing with the fuel-chamber having passagesin such manner that the recess and perforations of the former shallcoincide with the projection and the passages of the latter; in thecombination, with a recessed and perforated air-casing and 0 with afuel-chamber having a projection provided with passages, of asupplemental grate or fuelsupporter which has bearing both in theperforations in the recess of the air-casing and in the passages in theprojection upon 5 the fuel-chamber; in the combination of an air-casingwhich has an open or uncovered perforated recess and a projectingsupportingbar, a fuel-chamber or fire-pot which has a series ofhorizontal passages coincident with o the perforations in theair-casing, and a fuelsupporter which is adapted to the passages, to theperforations, and to the supportingbar; in a base-section having certainnovel features of construction and a novel gratecarrying frame; incertain novel appliances for the regulation of the draft of the heater,and in various other novel parts or novel combinations of parts, as willbe hereinafter described and claimed.

5o-. In the drawings, Figure 1 is a vertical central section, taken fromfront to back, of a furnace containing the features of my invention,showing the auxiliary or supplemental firesupport in its inoperativeposition. Fig. 2 shows the same section of the furnace represented inFig. 1, with the supplemental or auxiliary firesupport moved intooperative position. Fig. 3 is a view of the same section shown in Fig.1,with the supplemental or auxiliary fire-support in operative positionand the main grate removed to permit the escape of the contents of thefire-pot below the auxiliary or supplemental fire-support into theashpit. Fig. 4 is a view in horizontal section upon the line of thesupplemental or auxiliary fire-support, showing in plan parts below saidline. Fig. 5 is a perspective view of the gratesupporting frame andgrate removed from the furnace. Fig. 6 is a view in perspective, on

larged, of the box containing the cold-air mg ulation and controllingvalves. Fig. '7 is a vertical section through said box'and adjacent Iparts. Fig. S-is a view in perspective ofthe supplemental or auxiliaryfire-support. Fig.

9 is a view in perspective of the ash-pan removed from the furnace.

Referring to the drawings, A is the fire-pot; A, the combustion-chamber;A the ash-pan; A the downl'lues, which extend from thecombustion-chamber to the base-flue A.

A is the uptlue; A", the box into which the upflue A enters, and whichalso is connected by the passage or with the combustion-chamber. Thisbox contains the regulating-dampers,and has a collar, a, for receivingthesmoke- 8 5 B is the supplemental or auxiliary fire-support. It isrepresented as composed of the round rods 1;, having pointed ends b,(see Fig.

8,) and as arranged to extend across the fire pot at any desireddistance above the main grate. I have represented these rods as movablehorizontally in order that they may be brought into place across thefire-pot when it is desired that they shall act to support the 9 5 fireor section of fire above them and be removed from the fire-pot when thefire is sup ported by the main grate. To accomplish this,

I have formed holes B (see Fig. 1) in a front projection orprotuberance, b, of the metal sleeve or ring V, which forms the lowerpart of'the fire-pot, and have extended the rods through these holes andhave connected them together at their outer ends by a crossbar, bprovided with handles 11*. These holes serve as guides in directing themovement of the rods. The firepot is composed of the metal cylindricallower section or ring, I), which is made thick at its front side, or theside in which the holes B are formed, to provide a long bearing for thesupport of the rods b,and it also has a shoulder, b and anupwardextending flange, b, which extends around the outer edge of themetal casing b of the main part of the fire-pot. The shoulder also supports the fire-brick b Thelower part of the metal sleeve b rests uponthe plate I), and there is a flange, b extending upward from said plateinto a rabbet formed in the lower edge of the ring. This construction Ifind desirable for the purpose of carrying this feature of theinventioninto effect in a cheap,eflicient, economical, and desirable manner.\Vhilethis supplemental or auxiliary fire-support may be entirelydetachable from the stove or furnace and brought into use only when itis desired to move the contents of the lower part of the fire-pot fromthe fire, I prefer that it be a permanent attachment-that is, that itshall always be in place for operation; and as I have represented it asoperated from the front of the furnace or stove, in order that it maynot project too far from the front when not in use, I have formed in thefront plate, 0, of the aircasing G of the furnace or stove a deeprecess, c,which has in its inner extremity the series of perforations0', corresponding in number with the bars of the supplemental grate orfuel-supporter. The recess 0 is of a width to receive the rod-holdingbar I), so that shorter bars or rods may be used, as this permits theemployment of rods or bars not very much longer than the diameter of thefire-pot. hen not in use, the holdingbar b rests upon the arm c',withthe ends of the rods in the holes in operative position in the holes B.(See Fig. 1.)

As will be readily understood, owing to the frequent alternate expansionand contraction of the fuel-chamber and its projection, a narrow openspace will necessarily exist between the rear extremity of the recess inthe aircasing and the front extremity of the protuberance upon thefuel-chamber; and, since this space is in communication with and forms aportion of the air-chamber, deleterious gases might, by an imperfectdraft or by an accidental closure of the exit-flue, be forced throughthe passages 13 into such space, and thence into the several apartmentswhich receive their heat-supply from such air-chamber. Under allordinary circumstances, therefore, the supplemental grate orfuel-supporterwill, when not projected into the cavity of thefuelchamber, remain in the position indicated in Fig. 4, the bars 6occupying the passages B and effectually closing them againstthe escapeof the gaseous products of combustion.

' The main grate D is represented as of the ordinary form, and issupported by a solid frame, D, which slides horizontally in the ways dand is entirely removable from the casing of the furnace. The grate issupported upon the cross-bar d (see Fig. 5) of the frame in a manner tobe oscillated by the arm or rod d which extends from the front edge ofthe grate through the slot d in the front plate, (1, of the frame, thegrate having a pivot, (1 which extends into the hole at in the cross baror plate. (See Fig. 3.) The frame D has the narrow plate d, rounded atits inner end, and parallel sides d from said rounded inner end to thefront plate, (1*, and it is stayed by the crossbar Ii", as well as bythe grate-supporting bar (1'. The front plate, d",when in place, fitswithin a vertical opening, '1', and thus forms a section of the front ofthe furnace or stove, and there is attached to it, to project from itsouter surface, the handles al for moving the frame and grate. The frameis locked in place by means of the buttons (1, or in any other desiredway.

The grate-frame A has the anti-friction rolls d secured to the undersurface of the side bars, d which ride upon the ways (Z. Thisconstruction is quite essential in view of the weight of the grateframeand grate, and the ashes and fire supported thereby, in order to permitthe frame and grate to be moved horizontally outward from the fire'potto uncover or expose its opening to the ash-pit.

The damperbox A (see Figs. 6 and 7) is a casting having a flange, c, bywhich it is bolted to the body of the furnace. It is dividedhorizontally by a partial partitionplate, a, into two sections,whichopen into the chamber 6 in the back part of the box. Over the end ofthis partition plate is the main damper a, which is fastened to or madea part of the turning-rod e, which has hearings in the box at c. Thedamper is balanced so as to remain open or closed,and when closed itslower edge shuts against the shoulder a of the partition plate 0. Belowthe partial partitionplate 0, and in the lower plate of the box,there isan opening, 0, surrounded by a collar, e", which receives the upperendof the tube or pipe 6'", forming the flue A, so'that the upflue opensinto the chamber or flue 0' in the box formed by the partialpartition-plate,and thus has an unobstructed passage to the smokepipe.collar a, which receives the smoke'pipe, are formed the holes e, whichopen into the back chamber of the box, and which form a cold-air inlet,and the holes are closed or controlled as to size by the damper e, whichis attached to the turn-rod e", and which is pivoted along the innerlower edge of the said holes, and so that the damper is moved backward]y from the holes, the upper portion more than the lower. The damper isheld in any position to which it is moved by a pivoted catch, 6, whichbears upon the turn-rod.

To those who are conversant with this class of devices it will bemanifest from the forego- At the rear of the box and below the seace iing description and from the drawings that the partitionplate e affordsa fixed bearing and stop for the damper when in its closed position;that at the same time it acts as a deflector to direct the products ofcombustion as they are discharged from the rising flue A toward theexit-flue or collar a, and that when the damper is open it has theeffect to give direction to the products of combustion and to carry themwell along toward the outlet-opening of the box.

The ash tray A (see Fig. 9) preferably is of sheet metal, and iscapacious in size. It is preferably mounted upon the rollers f, and hasthe side handles, f,and also the drawn-in sidesf. There is also ahandlej, secured to the front or spout end of the pan.

Heretofore furnaces have not been,asa rule, provided with an ash-pan;but when theyhave been they have had but little capacity, have notbeenarranged to be moved easily,have been unprovided with handles of thecharacter described,and have not been constructed so that the contentsof the pan can be easily dumped or removed by tipping.

It will be observed that by supporting the main grate upon a slide-plateremovablefrom the furnace two important results are obtained-namely, theready and quick uncovering of the full opening of the fire-pot to theash-pit, and also the entire removal of the grate and its support orframe from the stove, so that a broken grate or part connected therewithcan be immediately taken from the stove or furnace and a new part orgrate substituted therefor,

In operation,where the auxiliary or supplemental fire-support ismovable, it is generally held in the position represented in Fig. 1, andwhen it becomes necessary to remove the dead clinker, ashes, and coalfrom the lower part of the fire-pot it is pushed into place, so as tooccupy the position in relation to the main grate and the fire-potrepresented in Fig. 2. The main grate is then removed and drawn out bymoving the slide plate outward to the position shown in Fig. 3. Thisuncovering of'theopening of the firepot to the ash-pit permits theentire contents of the ash-pit below the auxiliary fire-support to fallinto the ash-pit. The main grate is then immediately moved back intoplace beneath the firepot to close the opening and the auxiliaryfire'support moved from the fire-pot chamber to permit the fire to fallupon the main grate. This removes from the fire the principal matterwhich tends to check it and permits it to kindle asif it were anentirely fresh fire throughout.

Having thus fully described my invention, I claim and desire to secureby Letters Patent of the United States?- 1. A stove or furnace which hasan air-casing which is provided in its front or doorframe portion with arecess which is open at the front, and which has a vertical rear portionwhich is provided with a series of perforations, substantially as andfor the purposes set forth.

2. The combination, in an air-heating stove or furnace, of an air-casingwhich is provided in its front or frame portion with a recess which isopen at its front, and which has a vertical rear portion which isprovided with a series of perforations, and a fuel-chamberwhich has anoutwardly-projecting front portion which is coincident with the rearface of the recess in the air-casing, and which is provided with aseries of horizontal passages which correspond with the series ofperforations in such recess, substantially as and for the purposesspecified.

3. In an air-heating furnace or stove, the combination of a fire-potwhich has a front projection or protuberance in which is a series ofhorizontal passages, an air casing which has a series of perforationswhich correspond with the passages in the protuberance upon thefire-pot, and a supplemental grate or fuelsupporter which is adapted tothe passages and to the perforations, and which has bearing in suchpassages and in such perforations, whether it be in its fuel-supportingposition or in its withdrawn position, substantially as 1 described.

4. The combination, in an air-heating furnace or stove, of an air-casingwhich is provided with a recess which is open at the front, and whichhas in its rear wall a series of perforations, and which is provided,also, with a supporting-bar which projects outwardly from the frontlower portion of such recess, a fuel chamber or fire-pot which isprovided with a series of horizontal passages which coincide with theperforations in the air-casing, and an auxiliary or supplementalfuel-supporter which is adapted, when in its withdrawn or non-supportingposition,to extend transversely of the recess and to rest in thepassages in the perforations and upon the supporting-bar, substantiallyas specified.

5. In a heating stove or furnace, the combination, with the base-sectionthereof, provided upon its ash-pit walls with hearings or ways, andhaving a frontopening corresponding with such ways, of a gratecarryingframe which is provided with a vertical front plate which is adapted toenter and close the front opening in such base-section, the frame havingmove ment in or out upon the ways, and beingdetachable, together withits grate, through the opening which is closable by its front plate.

6. In a stove or furnace, the slide grateframe D, comprising the plate(1, forming a section of the front of the casing of the stove orfurnace, the side bars, d extending inward therefrom, and having thecross-support d and cross-bar d, for holding the grate, the grate D,pivoted upon said bar, and having the operating-rod (1 extending throughan opening in said front plate, as and for the purposes specified.

7. In a stove or furnace, the slide grate ITO frame comprising the plate(1, forming a section of the front of the casing of the stove orfurnace, the side bars, (1 extending inward therefrom, and having thecross-support d and cross-bar d, for holding the grate, the grate D,pivoted upon said bar, and having the oscillating rod extending throughan opening in said front plate, the furnace-casing, and a locking devicefor locking said slide-frame in place, as and for the purposesspecified.

S. In a stove or furnace, the combination, with the body thereof havingan exit'opening, of a damper-box which is provided with a frontreceiving-opening which corresponds with the opening in the body of thefurnace, with a horizontal division plate or diaphragm above the bottomof the box, which extends rearwardly from the lower extremity of thereceiving-opening and divides the front portion of the box into twoshort horizontal flues,

with a bottom receivingopening for the indi-.

rect exit currents, with a rear dischargingopening which communicateswith the uptake, and with a damper in the upper horizontal or directexit-flue.

9. The combination, with the combustionchamber having a directexit-opening in its rear wall, of a damper-box which is secured to therear wall of such combustion-chamber, which is provided with ahorizontal diaphragm which divides the front portion of the box into anupper passage for direct exit and a lower passage for indirect exit, andwhich is pro vided with a damperseat. with a front opening coincidentwith the direct exit-opening in the rear wall of thecombustion-chamber,witha bottom receiving-opening, with a rearexitopening in a plane with the upper passage for direct exit, with adamper in such upper pas sage, with check-draft openings-one or more inthe rear wallof the'box below the rear exitopening thereof, and with adamper pivoted at the base of the checkdratt openings, movable in thearc of a circle toward or from the bottom plate of the box and operatingto di' root the incoming currents of air in a direcor fuel-chamber whichembraces a metallic annular section, b", which is provided with a frontprojection or protuberance, as I), in which are formed the horizontalpassages B,

in combination with the grate D, and with the adjustable supplementalfuel supporter B, adapted, whether in its inner or outer adj ustment, torest in and be maintained in a horizontal position by the passages 13,substan: tially as specified.

12. In a heater, the base-section having top plate, I)", provided withupturned flange b, the annular metallic section I)", having rabbet inbottom edge, shoulder b and vertical flange b, and the metallic casing band fire-brick lining b resting upon the shoulder b and encircled by thevertical inclosing-flange b", in combination, substantially asdescribed.

FRANK A. MAGEE.

Witnesses:

FRED. B. DOLAN, J. M. DOLAN.

